Actions

Image copyright 2018 Getty Images. All rights reserved. This material may not be published, broadcast, rewritten, or redistributed.

Mario Tama

<p>TIJUANA, MEXICO - NOVEMBER 22: People waiting to cross the border in vehicles watch as U.S. Customs and Border Protection (CBP) agents conduct a "large-scale operational readiness exercise", which briefly closed the border crossing, on November 22, 2018 in Tijuana, Mexico. (Photo by Mario Tama/Getty Images)</p>